The Stikine property is underlain by Upper Triassic Stuhini Group rocks intruded by a Late Triassic to Early Jurassaic syenitic to monzonitic pluton of the Copper Mountain Plutonic Suite. This pluton has a pyroxenite border phase and an associated dike swarm of megacrystic syenite.
The dominant lithologies occurring on the property are Stuhini tuffs and flows of andesitic volcanics. The andesites are unaltered and contain no observed economic mineralization. In the vicinity of the Rugged Mountain peak and in several places along the main northwest trending ridge, the andesites are intruded by several fresh, megacrystic feldspar porphyry dikes. The contacts between the dikes and the country andesite are weakly hornfelsed and pyritic. While the hornfelsing creates small gossans at the dike contact zones, no mineralization was observed either in hand sample or in the assays or hornfelsed material. Several syenite and minor pyroxenite bodies locally intrude the andesite country rock. Along the northwest trending ridge top, the syenites (and much lessor pyroxenites) are locally copper mineralized along what appear to be structural zones.
The 2011 work program of Serengeti identified the probable source of the BC Regional Geochemical Survey stream sediment anomalies with the discovery of a body of previously unknown potassic and locally sodic (albite) altered and copper mineralized syenite. Mineralization in this previously unknown occurrence is fracture-controlled with locally disseminated chalcopyrite and malachite, occurring over a variably exposed 200 by 250 metre area. There is a notably low pyrite content and lack of associated colour anomaly. Several composite rock samples assayed 0.1 to 0.4 per cent copper with locally significant gold and silver values (Assessment Report 32898).
Out of 17 composite grab rock samples collected from this area, 5 rock samples collected averaged 0.3 per cent copper (from 0.2 to 0.43 per cent copper), 0.11 gram per tonne gold (up to 0.43 gram per tonne gold) and 1.9 grams per tonne silver (Assessment Report 33350). The remainder of the samples from this area, except for one, assayed from 0.05 to 0.09 per cent copper (Assessment Report 33350). These samples were reported by Serengeti to be composite grab samples taken over large areas (5 to 15 metres) and were not selected, high grade grab samples.
WORK HISTORY
In 1989, Homestake and Equity Silver completed a prospecting survey and collected 10 rock samples and 5 silt and soil samples (Assessment Report 19072). Candela completed an initial 159 sample soil survey.
In 1990, Candela Resources and Continental Gold Corp (Assessment Report 20414). The sites of the 1989 survey were re-sampled.
In 2004 and 2005 work was conducted by Strategic Minerals Ltd. On the Rugged Mountain claims (Assessment Report 28229).
In 2008, Rimfire Minerals (Assessment Report 30666) completed a prospecting, mapping, soil and silt sampling program on their Poke claims (Poker Creek property). They defined a copper- soil anomaly over a strike of 530 metres where 33 per cent of the samples within it were above the calculated 95th percentile. Neither gold nor silver was significantly anomalous within this region. The copper anomaly was down slope from syenite porphyry dikes. The target was not followed up with mapping or prospecting and no rock samples were taken. Soil sampling on the rest of the property yielded only slightly anomalous samples.
In 2011, Serengeti Resources Inc. acquired the initial Stikine claims by staking with further claims added in 2012. Work carried out by Serengeti in 2011 included geological reconnaissance, rock sampling and mapping of the Stikine claims over three days (Assessment Report 32898).
In 2012, Serengeti the crew completed a “B” Horizon soil sampling program of 139 of samples on 6 east-west lines, additional geological mapping and reconnaissance over the central portion of the project area, in addition to collecting 5 rock samples (Assessment Report 33350).
Refer to Shake (104G 155), Rugged Mountain (104G 150) and Goliath (104G 442) for related geological details and some overlapping work history.